Preliminary geologic map of the V-3NFE quadrangle of asteroid 4Vesta

Details Preliminary geologic map of the V-3NFE quadrangle of asteroid 4Vesta Preliminary geologic map of the V-3NFE quadrangle of asteroid 4Vesta

Dec 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufm.p23c1720h&link_type=abstract

American Geophysical Union, Fall Meeting 2011, abstract #P23C-1720

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Logic

[5464] Planetary Sciences: Solid Surface Planets / Remote Sensing, [6055] Planetary Sciences: Comets And Small Bodies / Surfaces, [6063] Planetary Sciences: Comets And Small Bodies / Volcanism, [6205] Planetary Sciences: Solar System Objects / Asteroids

Scientific paper

NASA's Dawn spacecraft arrived at the asteroid 4Vesta on July 15, 2011, and is now collecting imaging, spectroscopic, and elemental abundance data during its one-year orbital mission. As part of the geological analysis of the surface, a series of 15 quadrangle maps are being produced based on Framing Camera images (FC: spatial resolution: ~65 m/pixel) along with Visible & Infrared Spectrometer data (VIR: spatial resolution: ~180 m/pixel) obtained during the High-Altitude Mapping Orbit (HAMO). This poster presentation concentrates on our geologic analysis and mapping of quadrangle V-3NFE. The quadrangle is located between 90 and 180 degrees longitude and 21 and 66 degrees latitude. At the time of writing, the available data have sufficient spatial resolution of 400 m/pixel and illumination geometries to start the mapping process. Our geologic map is based on the morphology, mineralogy, and model ages of units that can clearly be delineated in the current data set. We will continuously update our map once Dawn provides even higher-resolution data from its survey orbit, high altitude mapping orbit (HAMO), and low altitude mapping orbit (LAMO). On the basis of the currently available data, numerous dark and bright albedo features are visible across the surface of Vesta. Color data show a wide variability in mineralogy/composition of specific geologic units. The surface is covered with a large number of impact craters of different morphologies and sizes, as well as numerous tectonic features, indicating that Vesta is a geologically complex body.

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